Write a note on the electron microscope.

(N/A) An electron microscope uses a beam of electrons instead of visible light to image specimens.
The electron beam is focused using precisely designed electric and magnetic fields,which act as lenses.
The resolution of an electron microscope is limited by the wave nature of electrons. According to de Broglie's hypothesis,the wavelength of an electron is much smaller than that of visible light,typically less than $1 \; \mathring{A}$.
Due to this extremely short wavelength,electron microscopes can achieve a resolution of approximately $0.6 \; \mathring{A}$.
Because of this high resolution,electron microscopes are used to observe and resolve individual atoms and molecules.